WMTSLayer Url Issues

i am trying to connect to a wmts url and i came across a rather serious issue with the arcgis javascript sdk

i have this url from my client: wmts.emapsite.com/wmts/1.0.0/WMTSCapabilitiesPNG.xml

the standard from ogc for wmts only suggests a namingconvetion for the capabiltities file.

The URL referencing a ServiceMetadata document can have any form but we

recommend the following syntax and format:

{WMTSBaseURL}/1.0.0/WMTSCapabilities.xml

Since my xml file is named differently and there is another file on the same server named according to the suggestion from the ogc standard - i am unable to call this wmts with the arcgis javascript sdk, becasue in the wmtslayer.js file arcgis automatically appends the version number 1.0.0 and WMTSCapabilitites to any url passed to the wmts layer ...